3-(7,7-Dimethyl-2-oxobicyclo[2.2.1.]hept-1-ylmethanesulfonyloxy)-2-methyl-2-(toluene-4-sulfonyloxymethyl)propyl 4-chlorobenzoate

Abstract

The title compound, C29H35ClO9S2, is a tris­(hydroxy­methyl)­ethane derivative with an asymmetric carbon in the propane skeleton. Surprisingly, in the unit cell, two stereoisomers with different configuration at this centre are present. Their relative orientation gives a nearly centrosymmetric arrangement, and all corresponding bond lengths and angles are comparable in the two mol­ecules. Two additional chiral centres with S-configurations present in the camphor­sulfonic acid group have to be the same in both mol­ecules, rendering the two compounds diastereomers.